Well, wouldn't it be best to take the Blu-Ray of I and II and edit it to match the AMC version, only leaving in the AMC shots when they're different? That way it's uncensored, and in the best possible quality.
The downside would be that the AMC logo, instead of always being there, would only pop up for extended scenes/shots, disappearing for the rest of the movie, which could be distracting.